Home / 11,289.72-15,570.16-6,812.52

Finding the Fourth Proportional to 11,289.72, 15,570.16 and 6,812.52

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Solution

The fourth proportional to 11,289.72, 15,570.16 and 6,812.52 is: 9,395.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.72 : 15,570.16 = 6,812.52 : x
  2. Step 2: Convert to fraction form
    11,289.72/15,570.16 = 6,812.52/x
  3. Step 3: Cross multiply
    11,289.72x = 15,570.16 × 6,812.52
  4. Step 4: Simplify right side
    11,289.72x = 106,072,026.40
  5. Step 5: Solve for x
    x = 106,072,026.40/11,289.72
  6. Step 6: Final answer
    x = 9,395.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.